Malaysia said it “categorically” rejected the Philippines’ filing on the basis that the extended continental margin in the submission “was projected from the baselines of the Malaysian state of Sabah”.
“This clearly disregards Malaysia’s indisputable sovereignty over the state of Sabah,” the diplomatic note said.
Complicated history
When Malaysia was formed in 1963, incorporating Sabah, the Philippines lodged a formal claim, arguing that Sabah rightfully belonged to the sultanate of Sulu and thus to the Philippines. Malaysia, however, maintains that the territory was legitimately ceded to it by the British. The dispute has persisted, periodically flaring up due to diplomatic notes, legal actions, and even armed incursions.
The last Philippine president to actively espouse, then backtrack on, the sultanate’s claim was Ferdinand Marcos Snr. Since his ouster in 1986, Manila has not formally recognised the sultan of Sulu.
Unresolved tensions
Julkipli Wadi, dean of the University of the Philippines’ Institute of Islamic Studies, told This Week in Asia that the Malaysian government should “show transparency” over the Sabah issue and that he expected the Marcos administration to shelve the dispute as did his predecessors.
“If it is shown that the oil that Petronas has been harvesting for decades comes from the Sulu Sea, then Malaysia should be man enough to open all books and never hide under the cloak of false claim and unwarranted use of other people’s and other country’s resources,” said Wadi, who hails from Sulu.
He expressed scepticism that a “strong position” over Sabah could be expected from Marcos Jnr “beyond beautifully crafted words”.
Political risk analyst Ronald Llamas told This Week in Asia that the president could not afford to be the first Philippine leader to drop the Sabah claim. “He has to negotiate for something, [or] at least appear to be negotiating. And he won’t simply drop the legacy of his father on Sabah.”
The government could also negotiate on behalf of the sultan’s heirs and his family, Llamas said.
It is unclear, though, with the South China Sea dispute on his plate, whether Marcos Jnr would be willing to devote time to the Sabah dispute.
In August 2022, his press secretary at the time, Trixie Cruz-Angeles, said the Sabah issue was “a private claim” by the sultan’s family and therefore “not an issue of sovereignty or of territory at the moment”.
The country’s recent UN submission, however, would categorically make Sabah a sovereignty issue.